I'm guessing that Justin Bieber is even less inhibited about his nudity than I am and that's something that I almost didn't think was possible. The one thing I don't believe I could muster up the courage for would be to serenade my grandmother in the nude. Justin apparently did just that and provided quite a show. His naked butt was readily visible for all to see, if not his family jewels which were hidden by his guitar. Grandma didn't seem too bothered by the naked display but she did ask him to put on his clothes. There hasn't been a confirmation of who actually took the photos that turned by on TMZ. Maybe Justin's mother?
He's still a bit too pre-pubescent for my taste but I guess he looks cute in the altogether. His behind is nicely shaped but enough with the ink.